Code 564 Fan Control (FC) CKT Fault

[White Lincoln]

Driving home this morning, the Cougar just died. Coasted into a closed gas station and tried to start the car. Cranks, but no start. Had it towed home and ran codes. Code 564 Fan Control (FC) CKT Fault. No issues up till now except the Check Engine light would come on once in a while and go off.

From what I can find, the Constant Control Relay Module (CCRM) is at fault. I think I replaced this a few years ago.

Any suggestions other than replacing the CCRM? Fan does run under KOEO test, both low and high then brings up the code 564.

Thanks.

 

[White Lincoln]

Forgot to mention that all three indicator lights on the dash are lit:
1) Check Gauges
2) Check Engine
3) Battery

All the gauges are working including the oil pressure. I can crank the engine and the oil pressure will go up and drop when I stop cranking.

 

[Vicinity]

Seems haywire, which ground wires should be checked?

 

[White Lincoln]

Seems haywire, which ground wires should be checked?

Good point. I will check that tomorrow. I am going to check the A/C relay as well.

What is weird that others that had this code, the car kept running. Mine will crank, but nor fire.

 

[White Lincoln]

Here is where I am at:
Both relays are good. I tested them for power (hear the solinoid click) and opening and closing the circuit. I did this to both relays.
The fuel pump shows pressure when the pump is turned on and gas is getting to the fuel rail (it was coming out of the tester and you can smell). But during crank, there is no pressure (expected).
I have no spark at a spark plug.
I have no spark at the coil to distributor.
I have 10 volts at the coil power instead of 12.

On to finding a test for the ignition control module (ICM).

I did order an Powertrain Control Module Relay just in case. I can't find the OEM module I replaced 5 years ago or my coil pack I had replaced.. where does this crap go?!

 

[Kidd-7]

The same nomes that steal socks outta the dryer. LOL

 

[bowez]

- Key "OFF".

- Disconnect Powertrain Control Module (PCM). Inspect for damaged or pushed out pins, corrosion, loose wires, etc. Service as necessary.

- Install breakout box, leave PCM disconnected.

- Disconnect Constant Control Relay Module (CCRM).

- Measure resistance between test pin 13 and test pins 40/60 at the breakout box.

- Is resistance greater than 10,000 ohms?

Issue is either CCRM or PCM. Do the fans come on ?
40 is BK/W wire and 60 is BK/Y both are gound
13 is T/O cooling fan (assume power)

X20 - Does Fan Run With Key On — 1994 Ford Thunderbird V6-232 3.8L Service Manual | Operation CHARM

Detailed repair manual for the 1994 Ford Thunderbird V6-232 3.8L.

charm.li

 

[White Lincoln]

Fan (as mentioned earlier) does go on, both speeds and then the code pops up.

Will look into both the aformentioned suggestion and the friken nomes... Thanks!

 

[White Lincoln]

Issue is either CCRM or PCM. Do the fans come on ?
40 is BK/W wire and 60 is BK/Y both are gound
13 is T/O cooling fan (assume power)

X20 - Does Fan Run With Key On — 1994 Ford Thunderbird V6-232 3.8L Service Manual | Operation CHARM

Detailed repair manual for the 1994 Ford Thunderbird V6-232 3.8L.

charm.li

The only bad thing is, getting to the PCM with a bad back. I have been putting off all kinds of work due to this menace. Sucks gettng old.

I did find my old PCM that I originally replaced, nothing wrong with it. Still can't find my CCRM though... friken nomes.